I need to connect a toothed-belt pulley to a motor shaft. (I have burned out the motor on the Z of my mill, so need to fit a replacement pulley to the replacement motor).
The previous pulley was attached by a cunning taper-lock. I bored the pulley bore with a taper, and made a thin tapered sleeve that was pushed in by a screw and washer in the threaded hole in the end of the shaft. That has worked very well. Too well, I really can't get it apart. For the new motor I am thinking of just Loctiting the pulley on. The new motor is rated 3.4Nm. A case-study here http://na.henkel-adhesives.com/us/content_data/356776_9294_LT5021_Retaining_Brochure_F.pdf calculates 225Nm for a 32mm shaft. The torque goes with the square, so (225 / 32^2) * 11^2 gives me 26Nm for my 11mm shaft. A very similar motor from the same manufacturer is rated 3.4Nm and has a peak torque of 13Nm. I wonder if that is enough margin? -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1916 ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
